Cross-browser / Polyfill Libraries

Appearance

• Responsive Web Design
  • Media Queries - Enquire.js
  • Responsive Image - Picturefill
  • Viewport Units Buggyfill
• Web Typography
  • @font-face - Font Face Observer
• Web Animation API
  • Web Animations Polyfill
• Web Components
  • webcomponents.js (v1 spec polyfills) / Polymer

Interaction

• Keyboard - Mousetrap
• scroll-behavior: smooth; - Smoothscroll Polyfill
• PointerEvent - PEP / React Pointable
• ResizeObserver Polyfill

Access

• Web Notifications API - Push.js / Notify.js
• Clipboard API - Clipboard.js / copy-to-clipboard
• Fullscreen API - Screenfull
• Page Visibility API - Visibility.js
• <iframe> - iframe-resizer

Network

• XHR - window.fetch Polyfill
• Server-Sent Events - EventSource Polyfill
• WebSocket - Socket.IO-client / Engine.IO-client / SockJS-client

Performance

• Web Worker - Greenlet / Workerize
• document-write - PostScribe
• User Timing API - marky

Offline

• Service Work - Workbox
• File / FileReader API
  • FileSaver.js / StreamSaver.js
  • blob-util
• IndexedDB
  • LocalStorage API - localForage

Media

• <video> - Video.js
• <audio> - Howler.js
• Web Audio API - Waud.js, Tone.js